clear states for frame components

app.py

@@ -232,6 +232,13 @@ def getStartEndPoints(mask):
 
     return x1, y1, x2, y2
 
+def reset_frame_components(first_frame, original_image, masked_image):
+    first_frame.value = None
+    original_image.value = None
+    masked_image.value = None
+    
+    return first_frame, original_image, masked_image
+
 
 with gr.Blocks() as demo:
     original_frame_list = gr.State([])
@@ -260,6 +267,7 @@ with gr.Blocks() as demo:
 
     in_video.change(fn=get_first_frame, inputs=[
                     in_video], outputs=[first_frame])
+    in_video.clear(fn=reset_frame_components, inputs=[first_frame, original_image, masked_image], outputs=[first_frame, original_image, masked_image])
     approve_mask.click(lambda x: [x['image'], x['mask']], first_frame, [
                        original_image, masked_image])
     track_mask.click(fn=track_and_mask, inputs=[